This bug tracks the renaming issue in https://github.com/openshift/installer/pull/10162.

Generally, existing vnet is required for private cluster creation, which is described in openshift installation document[1]. 
But for edge scenario if private cluster is not created in byo vnet, vnet will be created by installer. In this case, ssh rule is still created, and no inboundNAT is created, installer seems likely to fail when destroying bootstrap, because of https://github.com/openshift/installer/blob/main/pkg/infrastructure/azure/azure.go#L630-L664

[1] https://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html-single/installing_on_azure/index#private-clusters-default_installing-azure-private
    

  4.21    

    Always

    1. Create private cluster without byo vnet settings
    2. 
    3.
    

    installation failed

    installation succeeded